Built to extend Sigma Audio Networks' national terrestrial footprint into the digital ecosystem, InterWave enables brands to activate campaigns across both broadcast radio and digital audio platforms through a single, unified network. Sigma Audio Networks, Powered by MediaCo, Launches InterWave Digital Audio Network Reaching 210 Million Monthly Unique Users Mar 16, 2026 11:00 AM Eastern Daylight Time Sigma Audio Networks, Powered by MediaCo, Launches InterWave Digital Audio Network Reaching 210 Million Mont ...